Debbie Wanner

The castaways must figure out which attribute -- brains, brawn or beauty -- will be the thing that helps them win the most grueling competition yet.

Two legends in "Survivor" history set their sights on one another in an epic showdown; a castaway introduces the spy shack 2.0.

A castaway retrieves an idol from great heights; two castaways in the beauty tribe become friends; a taxing physical challenge could lead to immunity and rewards.

Survivors have a tribe swap; the game starts from scratch for one set of castaways; one castaway leaves his tribemates stranded in the ocean so he can search their camp for the immunity idol.

In a new twist, two immunity idols can be combined to form a super idol; one contestant finds a creative way to retrieve an idol while another struggles to find one.

When the severe heat of Kaoh Rong takes a toll on the castaways, one of them is medically evacuated.